VTECH India offers prism mould three gang for judging the strength and stability of cement specimens of diversity. Our machine (Model VT 1021) has been developed as per the international standards. VTECH India Prism Mould Three Gang is used for the purpose of determining liner shrinkage of mortar cement. It is made available with complete base. For correct assembly, the parts are marked with the identification number. Each mould is verified individually in respect to hardness, dimensional tolerance, squareness, roughness as well as flatness.